2000 Expedition Fuse 14 Blowing: Solved
#1
2000 Expedition Fuse 14 Blowing: Solved
I thought I should post what I found so someone else might benefit. I noticed that our interior lights weren't working, and found Fuse 14 blown. Got fuses the next day and blew 4 of them right away. Tried pulling the interior lights relay and still blew the Fuse. So, I started the Internet search. Didn't find much except that the GEM might be suspect. Great!! So I picked up more fuses and found that the fuse didn't blow with the battery saver relay pulled. The #5 terminal (bsr) was shorted to ground.
Took the Fuse box out with the GEM and started testing. The #5 terminal (bsr) only had continuity with one terminal on the fuse block, and none on the GEM. So I checked continuity on the wiring harness terminal and it was shorted to ground (of course). I looked up wiring diagrams and started checking light sockets on that circuit. The glove box light plug showed 0 ohms to ground. Checked the engine compartment light plug and it was open to ground. This seemed strange to me since they are on the same circuit, but for some reason it didn't occur to me that it was the problem at the time. Later that night it finally occurred to me that I should unplug the engine compartment light and retest the glove box plug, thinking that maybe the problem was in the light socket under the hood. That didn't fix it. Then I thought (Duh!!) I should look at the wires going up to the hood. There it was. After all that work and tearing stuff out, the two wires (power and ground) going up to the engine compartment light were chewed up and touching. Problem solved.
So if you're blowing fuse 14, check the wires going to your under hood light first!!
Fuse 14 provides power to the battery saver relay (also a few small lights), then the interior lights relay and the accessory delay relay (power windows). I noticed the interior lights first. Power windows were out, too.
Circuit #705 light green orange lg/o
Took the Fuse box out with the GEM and started testing. The #5 terminal (bsr) only had continuity with one terminal on the fuse block, and none on the GEM. So I checked continuity on the wiring harness terminal and it was shorted to ground (of course). I looked up wiring diagrams and started checking light sockets on that circuit. The glove box light plug showed 0 ohms to ground. Checked the engine compartment light plug and it was open to ground. This seemed strange to me since they are on the same circuit, but for some reason it didn't occur to me that it was the problem at the time. Later that night it finally occurred to me that I should unplug the engine compartment light and retest the glove box plug, thinking that maybe the problem was in the light socket under the hood. That didn't fix it. Then I thought (Duh!!) I should look at the wires going up to the hood. There it was. After all that work and tearing stuff out, the two wires (power and ground) going up to the engine compartment light were chewed up and touching. Problem solved.
So if you're blowing fuse 14, check the wires going to your under hood light first!!
Fuse 14 provides power to the battery saver relay (also a few small lights), then the interior lights relay and the accessory delay relay (power windows). I noticed the interior lights first. Power windows were out, too.
Circuit #705 light green orange lg/o
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